Vulcanizer.



Patented sept. 25, |900.

F. A. SEIBERLING.

VULCANIZER.

(Application filed Mar. 14, 1900.) (No Model.) 2 Sheets-Sheet I.

No. 658,472. Patented sept. 25, |900. F. A. SEIBEBLING.

V U L C A N l Z E R.

(Application led Mar. 14, 1900.)

(im model.) 2 sheets-sheet 2.

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A llNiTED STATES PATENT OFFICE.

FRANK A. SEIBERLING, OF AKRON, OHIO.

VU LCANIZER.

fSPE.C2I]E`]ICA.TIO1\T forming part of Letters Patent No. 658,472, datedSeptember 25, 1900. Application led March 14, 1900. Serial Nin-8,591.(No model.)

T0 all whom t may concern:

Be it known that I, FRANK A. SEIBERLING, a citizen of the United States,residing at Akron, in the county of Summit and State of Ohio, haveinvented a certain new and useful Improvementin Vulcanizers, of whichthe following is a specification.

My invention has relation to improvements in vulcanizers for articles ofrubber, and has especial relation to that class of vulcanizers used forcuring pneumatic tires.

One object of my invention is to produce a new vulcanizer in which thesame-heat may 4be used to vulcanize two or more tires simultaneously andwhich, by means of power-actuated mechanism, may be closed to lock thetires in the molds and to open them when the process is completed.

A further object is to control the entrance and eXit of steam to andfrom the vulcanizers at will, and aV final object is to providemachinery to accomplish these different eects.

To the aforesaid objects my invention consists in the peculiar and novelconstruction, arrangement, and combination of parts hereinafterdescribed, and then specifically pointed out in the claims, referencebeing had to the accompanying drawings, forming a part of thisspecification.

In the accompanying drawings, in which similar reference-numeralsindicate like parts in the diierent views, Figure 1 is a side elevationof my improved vulcanizer; Fig. 2, a view of the cases detached, withthe nearer portion broken and showing the cases in section; and Fig. 3,a plan of the same.

Referring to the drawings, 1 is an annular hollow case supported on legs2, from one side of which case extend two parallel arms 3 3, to each ofwhich is bolted a plate 4, having a semicircular notch in its upper endto form a bearing for a journal of the upper case 5. The upper case 5 issimilar in construction and size to the case 1 and has parallel arms 6,with outwardly-turned cylindrical ends 7 to form journals to rest inthe' notches of the plates these arms and cylindrical ends being hollowand internally connected with the case 5. Extending from the back of thecase 5 is a bar S, provided with a counterweight 9, to balance the'caseas it is rocked upward. Between the cases 1 and is a hollow ring 10, ofthe sameinternaland external diameter as those cases, having parallelbars 11, ex-

tending from one side, arranged to lie adjacent to andbetween the arms3, curved to fit the upper half of each cylinder end 7, projectingbeyond these ends, and each provided with a counterweight 12. This ring10 is provided at its front with a handle 13, by which it may be raisedand lowered, and has a spring-pressed latch 14, arranged to engage a lugon the case 5 and hold the case and ring together.

About the under face of the case 1 at regular intervals are fastenedbrackets 15, each provided with a bolt-hole and with its outer endformed into an inverted hook, with one longer internal straight face.Pivoted in these brackets are levers 16, in T shape, with their longerarms projecting toward the center line of the cases 1 and 5 and roundedfor a purpose to be stated. The shorter arms of these levers areprovided at each end with bolt-holes and each is pivotally secured atone end to one of the brackets 15.

Supported centrally beneath the case 1 by braces 17 is a cylinder 18,provided with a piston and rod, which rod terminates in av circular head19, having a deep, semicircular groove around it, in which groove therounded ends of the long arms of the levers 16 rest.

At one side of the cylinder 1S and, as shown in Fig. 1, slightly aboveit is a four-way valve 20, provided with a lever 21, by which it may berocked. This valve is connected by pipes 22 and 23 with the upper andlower ends of the cylinder 18, respectively, and by pipes 24 and 25 witha source of uid under pressure and an outlet or waste. .As this is acommon form of four-way valve, no detail of its construction has beendeemed necessary. Adjacent to the valve 2O is a three-way valve 26,provided with a lever 27, by which it may be rocked. The valve isconnected by the pipe 28 95 IOC) the shorter arms of the levers 16 arelink-bars 33, which are similarly connected with one end of ltheclamp-bars 34, which stand about the cases 1 and 5 and have offset upperends provided with screw-threaded bolts 35, arranged when the clamp-bars34 are vertical to overhang the case 5 and press on it when the bars aredrawn vertically downward. The bars 34 are connected with the brackets15 by coiled springs 36, fastened between hooks on the clam p-bars 34and the brackets 15, that constantly draw them upward, and each has aprojecting pin 37, arranged when the bar is raised to enter thehookedend of a bracket 15 and serve as a pivot for the bar to rock on.

To the adjacent faces of the cases 1 and 5 and the ring 10 are secured,by means of bolts in projecting perforated lugs 38 39, annularhalf-molds 40 and 41, arranged'to register with each other and toreceive and hold a tire to be vulcanized. In the inner side of each pairof molds is a lug in which are semicircular grooves 42 for the receptionof the inspirating-tube by which the tire is inflated during the processof vulcanization. As this tube is a common device shown in otherapplications, it has not been exhibited in the drawings. Y

Pivotally mounted on a lug projecting from the bottom of the case 1,which is indicated by dotted lines in Fig. 3, is a lever 43, having atone end a pin that runs in a slot-bar 44, which bar is pivoted at itsupper end to the bar S on the case 5. The opposite end of the lever 43rests in the groove in the piston-rod head 19, and rocks with its riseand fall, and by its operation swings the case 5 up to open the pressand releases it to permit it to descend by gravitation.

The operation will be understood by assuming the valcanizer closed, asshown in Fig. 1, and the molds empty. The operator first swings thelever 21 to introduce the fluid under pressure to the bottom of thecylinder 18, which causes the piston to commence to rise. This raisesthe longer arms of the levers 16 and iiexes the joint between theirshorter ends and the links 33, which permits I the clamp-bars 34 firstto rise, drawn up by the springs 36, until their bolts 35 are free fromthe case 5, and as the piston continues to rise they will be rockedoutward. At this time the lever 43 has rocked down so that the pin atits outer end has reached the lower end of the slot in the bar 44 andcontinuing its motion draws downV the bar 8, thus rocking the case 5 andring 10, which is held to it by the latch 14, upward until thecompletion of the stroke of the piston. This has opened the mold betweenthe case 1 and ring lO and a green unvulcanized tire is placed therein.The operator then releases the latch 14 and swings the ring 10 down onthe case 1, thus opening the upper set of molds, and a` greenunvulcanized tire is placed in the half-mold in the ring 10. To enablethe fresh tires to `so as to introduce fluid under pressure to forcelthe piston down and lowering the piston-rod head 19, rocking down thelevers 16.

`The rst eect of this motion is to rock the clamp-bars 34 to a verticalposition, so that their bolts overhang the case 5, and then bystraightening the toggle-joint, of which the 8o `links 33 form a part,to draw them vertically down with great force on the case, thus bind ingthe cases 1 and 5 and the ring 10 together. During the last movement thelever 43 has also rocked to raise its outer end to release the bar 44 topermit the case 5 to descend. Steam is then introduced to the molds andtires by the valve 26 and maintained during the requisite time forvulcanization,when the steam is turned olf, the cases and molds 9oopened in the manner before stated, the cured tires removed, and greenones substituted.

I claim as my invention- 1. In avulcanizer the combinationof a fixedhollow case, a movable hollow casehinged thereto and an intermediatehollow ring hinged between said cases and molds in said cases and ring,with means for connecting said movable case and ring, clamps to bindsaid cases and ring together and means for loo introducing andcontrolling the entrance and escape of live steam to and from said casesand ring, substantially as shown and; de-

scribed.

2. In a vulcanizer the combination of a fixed Io 5 hollow case and amovable hollow case hinged thereto anda hollow ring hinged between` saidcases and molds in said cases and ring, of a cylinder connected withsaid fixed case having a piston and rod adapted by intermediate x 1omechanism to close and lock said cases and ring and to release and openthem and means for controlling a fluid under pressure to op.- erate saidpiston, substantially as shown and described.

3. In a vulcanizer the combination with a fixed hollow case and amovablehollow case hinged thereto and a hollow ring hinged between` saidcases molds held therein, and means for causing said movable case torock 12o on its hinges, of a latch to connect said` ring and movablecase to cause them to move in unison, substantially as shown anddescribed.

4. In a vulcanizer the combination withfa fixed hollow case and amovable hollow case 12 5 hinged` thereto and a hollow ring hinged be.-tween` said cases and` molds insaid cases; and ring, a latch todetachably connect said ring and movable case, of a cylinder having apiston and 'rod adapted to be moved by a fluid 13o under pressure, meansfor controlling the entrance and escape of said fluid to operate saidpiston, of a pivoted lever adapted tolbe rockedf` by said piston-rod,and a slotted bar connecting said lever and movable case to open andclose said case by the movement of said piston, substantially as shownand described.

5. In a vulcanizer the combination with a fixed hollow case and amovable hollow case and a hollow ring hinged between said cases andmolds in said cases and ring, of a cylinder with a piston and rod, anumber of levers pivoted about said fixed case,.having one end arrangedto engage and be rocked by said piston, clamp-bars arranged about saidxed case susceptible of a rocking and a longitudinal movement, adaptedto rock to and descend to bind said cases and ring and to rise andrelease said cases and ring, and rock away from them, and links toconnect the opposite ends of said levers and clamp-bars, to cause thelatter to operate, substantially as shown and described.

6. In a vulcanizer the combination with a ixed hollow case and a movablehollow case, and a hollow ring hinged between said cases and molds insaid cases and ring, and molds connected with the adjacent faces of saidcases and ring and arranged to register, of a cylinder having a pistonand rod adapted to be moved reciprocally by a fluid under pressure,means for controlling the entrance of steam to said cases and ring,locking devices arranged to be operated by said piston to lock togetherand release said cases and ring,

mechanism adapted to be operated by said piston to open said movablecase, and a latch to unite said ring and movable case, substantially asshown and described.

7. Tripartite vulcanizers consisting of a fixed hollow case, a movablehollow case hinged thereto, and a hollow ringl hinged be tween saidcases, and molds retained within said cases and ring and between theiradja= cent faces, and means for severally heating said cases and ring,substantially as shown and described.

8. .As an improved article of manufacture a vulcanizer having aplurality of hollow cases hinged together, molds in said cases and meansfor severally heating saidemolds, substantially as shown and described.

9. An improved vulcanizer, consisting of a plurality of hollowsteam-cases hinged together, molds within said cases, means for heatingsaid cases and molds and mechanism for opening and closing said molds,substanv tially as shown and described.

In testimony that I claim the above I hereunt-o set my hand in thepresence of two subscribing witnesses.

FRANK A. SEIBERLIN G.-

In presence of- C. E. HUMPHREY, C. P. HUMPHREY.

